These are very good what-ifs! The one that I've always wondered about is Pat Moraz playing on GFTO. I would loved to have heard that! I think of maybe 2 outcomes for this: The album may have sounded more jazzy and I'm sure a Rhodes piano would've been in there somewhere. Would there have been the church organ in Awaken? For that track alone I'm glad Rick was there, but after hearing Pat's work with the Moody Blues that he did after Yes (check out Long Distance Voyager) it might have made Tormato more interesting!
Then there's the 8-man line-up. I saw them at Wembley and they were fantastic! But a longer spell I have that saying in mind "too many cooks spoil the broth" so I personally don't think that 2 drummers and keyboardists were necessary long term. But as I love guitar music I would love to hear Howe & Rabin working together on at least 1 album. I wonder how Talk would've turned out, with Steve's contributions and Rick on keys?
I can think of 2 other what-ifs? 1. Billy Sherwood played on Talk tour along with Trevor Rabin, so what if that line-up stayed together but Tony still left and Rick rejoined? 2. In 1982 Jon Anderson made a single with Mike Oldfield called Shine. Apparently they didn't get on too well (according to an interview with Mike) but what if they had got on better and recorded a whole album together?
In reality, I'm just glad that Yes are still going and look forward to their next album. And I admire Jon Davison for having the guts to sing Awaken and do such a good job at it!